User guide
Table Of Contents
- Presentation
- Warning
- Copyright
- 1 References
- 2 Packaging
- 3 General presentation
- 4 Characteristics and Services
- 5 Use of the modem
- 5.1 Starting with the modem
- 5.2 Specific recommendations for the use of the modem in vehicles
- 5.3 GSM led of the modem
- 5.4 Echo function of AT commands deactivated
- 5.5 Checking the quality of the GSM reception signal
- 5.6 Verification of PIN code
- 5.7 Verification of modem registration on GSM network
- 5.8 Verification of modem registration on GPRS network
- 5.9 Verification of internal voltages of the modem
- 5.10 Main AT commands (HAYES)
- 5.11 Turning OFF the modem
- 5.12 Updating procedure of the modem
- 6 Trouble Shooting
- 7 Functional description
- 8 Technical characteristics
- 8.1 Mechanical characteristics
- 8.2 Electrical characteristics
- 8.3 Environmental characteristics
- 8.4 Standards/Conformities
- 9 Security recommendations
- 10 Recommended accessories
- 11 Client support
EG_GenPro25e_1055_UG_000_UK Page 59 / 66
Descriptions and non-contractual illustrations in this document are given as an indication only.
ERCO & GENER reserves the right to make any modification.
Dct_427_01
8.2.5.4 Analog Input – ANA1 (4 – 20mA) on INPUT 2
As an option, it is possible to have an analog input instead of the opto-coupled input I2.
This analog input allows to do a current measure (contact us).
Table 39 : Characteristics of the option Analog Input 1 in current
Characteristics Symbols Conditions Min. Typ. Max. Unit
Analog input ANA1 25 mA
dc
Conversion range 6.5 V +V
DC
32V 0.66 24 mA
dc
Polarization current 32 pA
dc
Figure 29 : Internal electrical scheme of the option Analog Input 1 in courant
The integrator has the responsibility to protect the input from electric disturbances and to
respect the values of the functioning parameters.
8.2.5.5 Bus One Wire (0 - 3.3V) multi-salves Dallas on INPUT3
As an option on the GenPro 25e, it is possible to have an input Bus One Wire instead of the opto-coupled
input I3.
The bus is managed by a DS 2482S-100 from Maxim.
Table 40 : main electrical characteristics of the DS2482S-100
Characteristics Symbols Conditions Min. Typ. Max. Unit
1-Wire Input High V
IH1
1.9 V
dc
1-Wire Input Low V
IL1
0.9 V
dc
1-Wire Weak Pullup
Resistor
R
WPU
1 000 1 675
1-Wire Output Low V
OL1
@ 4mA load 0.4 V
dc
Active Pullup On Time t
APUOT
Standard 2.3 2.5 2.7 µs
Overdrive 0.4 0.5 0.6 µs
Strong Pullup Voltage Drop V
STRPU
VCC 3.2V, 1.5mA load 0.3 V
dc
Pulldown Slew Rate PD
SRC
Standard (3.3V ±10%) 1 4.2 V
dc
/s
Overdrive (3.3V ±10%) 5 22.1 V
dc
/s
Pullup Slew Rate PU
SRC
Standard (3.3V ±10%) 0.8 4 V
dc
/s
Overdrive (3.3V ±10%) 2.7 20 V
dc
/s